Are you sure that is the right defrost timer for a hot gas defrost refrigerator? That 330 defrost timer is the common one for an electric defrost refrig. I think that timer has too long of a defrost time, hence the warm temps.
The coil kit is new, in original package. Cost is $75.00. Price includes shipping. You can pay with a money order mailed to me. Let me know your address. Email me with the info and I will email you my address.
These coils are not available individually. They have always come as an assembly. The similar Maytag coils are available individually, but they are NLA as well.